1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright (c) 2013 Stefano Sabatini
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <zmq.h>
#include "libavutil/mem.h"
#include "libavutil/bprint.h"
#if HAVE_UNISTD_H
#include <unistd.h> /* getopt */
#endif
#if !HAVE_GETOPT
#include "compat/getopt.c"
#endif
/**
* @file
* zmq message sender example, meant to be used with the zmq filters
*/
static void usage(void)
{
printf("send message to ZMQ recipient, to use with the zmq filters\n");
printf("usage: zmqsend [OPTIONS]\n");
printf("\n"
"Options:\n"
"-b ADDRESS set bind address\n"
"-h print this help\n"
"-i INFILE set INFILE as input file, stdin if omitted\n");
}
int main(int argc, char **argv)
{
AVBPrint src;
char c, *src_buf, *recv_buf;
int recv_buf_size, ret;
void *zmq_ctx, *socket;
const char *bind_address = "tcp://localhost:5555";
const char *infilename = NULL;
FILE *infile = NULL;
zmq_msg_t msg;
while ((c = getopt(argc, argv, "b:hi:")) != -1) {
switch (c) {
case 'b':
bind_address = optarg;
break;
case 'h':
usage();
return 0;
case 'i':
infilename = optarg;
break;
case '?':
return 1;
}
}
if (!infilename || !strcmp(infilename, "-")) {
infilename = "stdin";
infile = stdin;
} else {
infile = fopen(infilename, "r");
}
if (!infile) {
av_log(NULL, AV_LOG_ERROR,
"Impossible to open input file '%s': %s\n", infilename, strerror(errno));
return 1;
}
zmq_ctx = zmq_ctx_new();
if (!zmq_ctx) {
av_log(NULL, AV_LOG_ERROR,
"Could not create ZMQ context: %s\n", zmq_strerror(errno));
return 1;
}
socket = zmq_socket(zmq_ctx, ZMQ_REQ);
if (!socket) {
av_log(NULL, AV_LOG_ERROR,
"Could not create ZMQ socket: %s\n", zmq_strerror(errno));
ret = 1;
goto end;
}
if (zmq_connect(socket, bind_address) == -1) {
av_log(NULL, AV_LOG_ERROR, "Could not bind ZMQ responder to address '%s': %s\n",
bind_address, zmq_strerror(errno));
ret = 1;
goto end;
}
/* grab the input and store it in src */
av_bprint_init(&src, 1, AV_BPRINT_SIZE_UNLIMITED);
while ((c = fgetc(infile)) != EOF)
av_bprint_chars(&src, c, 1);
av_bprint_chars(&src, 0, 1);
if (!av_bprint_is_complete(&src)) {
av_log(NULL, AV_LOG_ERROR, "Could not allocate a buffer for the source string\n");
av_bprint_finalize(&src, NULL);
ret = 1;
goto end;
}
av_bprint_finalize(&src, &src_buf);
if (zmq_send(socket, src_buf, strlen(src_buf), 0) == -1) {
av_log(NULL, AV_LOG_ERROR, "Could not send message: %s\n", zmq_strerror(errno));
ret = 1;
goto end;
}
if (zmq_msg_init(&msg) == -1) {
av_log(NULL, AV_LOG_ERROR,
"Could not initialize receiving message: %s\n", zmq_strerror(errno));
ret = 1;
goto end;
}
if (zmq_msg_recv(&msg, socket, 0) == -1) {
av_log(NULL, AV_LOG_ERROR,
"Could not receive message: %s\n", zmq_strerror(errno));
zmq_msg_close(&msg);
ret = 1;
goto end;
}
recv_buf_size = zmq_msg_size(&msg) + 1;
recv_buf = av_malloc(recv_buf_size);
if (!recv_buf) {
av_log(NULL, AV_LOG_ERROR,
"Could not allocate receiving message buffer\n");
zmq_msg_close(&msg);
ret = 1;
goto end;
}
memcpy(recv_buf, zmq_msg_data(&msg), recv_buf_size);
recv_buf[recv_buf_size-1] = 0;
printf("%s\n", recv_buf);
zmq_msg_close(&msg);
av_free(recv_buf);
end:
zmq_close(socket);
zmq_ctx_destroy(zmq_ctx);
return ret;
}
|
